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(No Model.)

K. HYDE.

WOOD RIM PULLEY.

Patented Dec. 9, 1884.

' Unites Sierras Parent tribe.

KIRKLEY HYDE, OF LOXVELL, MASSACHUSETTS, ASSIGNOR OF THREE' FOURTHS TO JAMES \V. BENNETT, ALBERT M, MOORE, AND FREDERICK TAYLOR, ALL OF SAME PLACE.

WOOD-RIM PULLEY.

SPECIFICATION forming part of Letters Patent No. 309,1l3, dated December 9, 1884c.

Application filed May 12, 1884. (No model.)

To all whom it may concern:

Be it known that I, KIRKLEY HYDE, a citi zen of the United States, residing at Lowell, in the county of Middlesex and Common- 5 wealth of Massachusetts, have invented certain new and useful Improvements in Vood Rim Pulleys, of which the following is a specification.

My invention relates to that class of wood 10 rim pulleys in which the ends of the middle or foundation fellies engage directly with the outer ends of the spider-arms; and it consists in providing the outer ends of the spiderarms with wedge-shaped ledges and with abutments, and in shaping the ends of the i'ounda tion-fellies to receive and fit said ledges and abutments, for the purpose herein specified.

In the accompanying drawings, Figure l is a side elevation of such a pulley, a part of the 20 lags or outer l'ellies being broken away to show the ledges and abutments at the ends of the arms and the recesses in the ends of the foundation-fellies. Fig. 2 is a central crosssection of the same on the line a: a; in Fig. 1.

A is a metallic spider, consisting of the hub a and the arms a, of any usual construction,

except that the outer ends of the arms are each provided on each edge thereof witha wedge-shaped ledge, (6 substantially as shown 0 in another application filed herewith, cept that, whereas in said other application the outer inclined faces of the ledges of each arm meet at the extreme outer end of the arm, and whereas the inner faces of the ledges are 35 inclined from the arm proper, in this application the ledges are each provided with two abutments, a", one on the outer and one on the inner face of the ledge. Each of these abutments has one face that is about parallel line of said arm. fellies, B, are each provideda-t each end with with a plane in which the axis of the spider 4c lies, and which passes through the center of the arm carrying the abutments. The outer end of the arm is a plane which connects two outer abutments at right angles to the center The middle or foundation a notch adapted to receive one of the wedgeshaped ledges a", and are otherwise shaped to fit against the abut nents and to reach over the outside of the end of the arm and meet the adjacent fou ndation-fell y at the middle of said arm. Each middle telly should fit so closely between two adjacent arms as to require considerable force to press it into place. Vhen the middle fellies are in place, they form a foundation, to which the outer fellies are then I secured by screws or nails and glue, in the usual manner.

In the above-described construction it will be seen that any shrinking ofthe wood of the middle telly will cause its ends to pinch the ledges more closely, and the ahutinents will prevent the wedge-shaped ledge-s from worlv 'ing or being'crowded into the tellies far enough to split the same.

I claim as my invention- The combination of a metallic spider, having the outer ends of its arms provided with wedge-shaped ledges and with abutments, and the foundatioirfellies having their ends pro vided with notches to fit such lodges, and otherwise adapted to rest against said abutments and be retained in position thereby, as and for the purpose specified.

KIRKLEY HYDE.

Witnesses:

EDW. W. THOMPSON, ALBERT M. MOORE. 

